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INVESTMENTS (Tables)

6 Months Ended

Jun. 30, 2025

Investments, Debt and Equity Securities [Abstract]

Schedule of Financial Instruments by Significant Categories and Fair Value Measurement on a Recurring Basis

The following tables summarize our financial instruments by significant categories and fair value measurement on a recurring basis as of June 30, 2025 and December 31, 2024 and the amortized cost, gross unrealized gains, gross unrealized losses, fair value of our AFS investments:

(in millions)			Fair Value Level			Amortized Cost			Gross Unrealized Gains			Gross Unrealized Losses			Fair Value			Cash and Cash Equivalents			Investments			Restricted Cash, Cash Equivalents and Investments
June 30, 2025
Cash equivalents:
Money market mutual funds			Level 1			$	164		$	—		$	—		$	164		$	31		$	—		$	133
U.S. treasuries			Level 2			7			—			—			7			—			—			7
Total cash equivalents						171			—			—			171			31			—			140
AFS Investments:
Corporate bonds			Level 2			34			—			—			34			—			—			34
Agency securities			Level 2			13			—			—			13			—			—			13
U.S. treasuries			Level 2			158			1			—			159			—			—			159
Total AFS Investments						$	205		$	1		$	—		$	206		$	—		$	—		$	206

(in millions)			Fair Value Level			Amortized Cost			Gross Unrealized Gains			Gross Unrealized Losses			Fair Value			Cash and Cash Equivalents			Investments			Restricted Cash, Cash Equivalents and Investments
December 31, 2024
Cash equivalents:
Money market mutual funds			Level 1			$	570		$	—		$	—		$	570		$	257		$	—		$	313
U.S. treasuries			Level 2			1			—			—			1			—			—			1
Total cash equivalents						571			—			—			571			257			—			314
AFS Investments:
Corporate bonds			Level 2			35						—			35			—						35
Agency securities			Level 2			18			—			(1)			17			—						17
U.S. treasuries			Level 2			176						(2)			174			—						174
Certificate of deposit			Level 2			1			—			—			1			—			—			1
Total AFS Investments						$	230		$	—		$	(3)		$	227		$	—		$	—		$	227

Schedule of Fair value of Debt Investments by Contractual Maturity

The fair value of debt investments by contractual maturity are shown below:

(in millions)						June 30, 2025
One year or less						$	14
Over one year through five years						185
Over five years through ten years						5
Over ten years						2
Total fair value						$	206

Schedule of Available-for-Sale Securities

The gross proceeds from sales and maturities of AFS securities and gross realized losses for the three and six months ended June 30, 2025 and 2024 are presented below. We had immaterial gross realized gains from sales of investments for the three and six months ended June 30, 2025 and 2024.

			Three Months Ended June 30,									Six Months Ended June 30,
(in millions)			2025			2024						2025			2024
Gross proceeds from sales			$	31		$	22					$	62		$	61
Gross proceeds from maturities			1			37						4			64

X

- Definition

Tabular disclosure of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 320
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 9
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481800/320-10-50-9

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 320
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481800/320-10-50-3

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 320
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481800/320-10-50-2

Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 320
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-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481800/320-10-50-2

Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 320
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481800/320-10-50-2

Reference 6: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 320
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (aa)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481800/320-10-50-2

Reference 7: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 320
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (aaa)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481800/320-10-50-2

Reference 8: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 320
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481800/320-10-50-2

Reference 9: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 320
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481800/320-10-50-3

Reference 10: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 320
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481800/320-10-50-3

Reference 11: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 320
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481800/320-10-50-3

Reference 12: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 320
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481800/320-10-50-3

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+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 820
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-Name Accounting Standards Codification
-Section 50
-Paragraph 2
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